Controller for electric motors.



N0. 663,49l. Patented Den. II, |900.

C. A. DRESSER. CONTROLLER FOR ELEGTRIC MOTORS.

(Appliction filed May 10, 1900.)

3 Sheets8heet (llo Nudel.)

N0. 663,491. Patented Dec II, I900. C. A. DRESSER.

CONTROLLER FOR ELECTRIC MOTORS.

(Applicntion am: Is.y 1o, 1000. (N0 Modul.) 3 Sheets-Sheot 2.

m: NORFUS ws'rms eo. PHOTC-LITHO, WASHING TTTT 0 c Ptented Den. n, man.

C. A. DRESSER.

CONTROLLER FOR ELEGTBIO MOTORS.

(Application flled Ma.y 10, 1900.)

3 Sheets Shaet 3.

(N0 Nudel.)

m: nimrus PETERS Co. pr onm.rmo WASHINGTON. u c

UNITED STATES PATENT OFFICE.

CHARLES A. DRESSER, OF CHICAGO, ILLINOIS, ASSIGNOR TO G. A. ED\VARD KOHLER AND FRANKLIN W. KOI-ILER, OF SAME PLAGE.

CONTROLLER FOR ELCTRHC MOTORS.

SPECIFIGATION forminsz wart of Letters Patent N0. 663,491, dated December 11, 1900.

Applieation filecl Mzny 10, 1900.

T all w7wm it may c0ncern;

Be iE known EhaE I, CHARLES A. DRESSER, a eiEizen 0f Ehe United StaEes, residing zEE Chieago, in Ehe eounty 0f Uook 2End Staate oft Illl- 5 nols, have invented a eerEain new ancl useful Improvement in Controllers f0r EleeErle M0- t0rs, 0f Whieh Ehe following is a full, elear, eoneiseand exaetclescription,referenee being had Eo Ehe zweon1 panying drawings, forxn1ng n parE 0f Ehis speeifieation.

My invention relaEes E0 a controller for elee- Erle moEers, my objeel: being Eo provide an improved form 0f controlllng deviee whereby Ehe opemEion 0f an eleetrie xnoEor e1nployecl for drivlng maehinery 0r 0Eher apparaEus may be regulaEed es desired.

lhe apparatus speeifically deseribed in Ehe presenE applleation has heen designed m0re partieulerly f0r Ehe eonErol of eleetrie 1110E0r3 employed in driving prinEing-presses, ancl I lmve illusEreted my invenEion in eonnec-Eien Wl[h a eontroller so adapEed in order EhaE n1y invention nmy be elearly eomprehencled. IE will be unclersEoed, hewever, Ehat xny inven- Ei0n is noE limited E0 Ehe conorol 0f motors operated f0r Ehis purpose, buE is equally applicable t0 Ehe eonErol et meEors employed f0r 0Eher purposes.

In driving prinEing-presses iE bes been proo p0sed Eo employ (E mein and an auxiliary 1n0E01, Ehe nuxillary |110E01' being ndapEecl Eo starE Ehe press and bring Ehe szune Eo (E defi n1te speedsny oneEenEh nornml speed-Ehe mein 1110E0r belng e0upled wiEh Ehe press,

5 whereby Ehe arxnaEure 0'f Ehe mein rnotor is also smrEed by Ehe auxilizrry motor. \Vhen Ehe mein xnoE0r has Eh us been broughE Eo Ehe definite speed, eurrenE is snpplied Eheret0 and Ehe1nain n10E0r Eakesthe loedand Ehrough 0 Ehe ngencyof an nutoxnaEie eluteh Ehe auxilinry motor is diseonneeted from Ehe press and may be rexnoved fr0xn clreuiE nnd breugh Eo resE. The apparatus herein deserlbed is par- Eieulerly applienlele for 0peraEi0n in eennee- 5 Ei0n wiEh (L press e ilapted Eo l e driven by El mein und an 4uxiliary me'nor, es above clescrined. In Letters PatenE N0. Ol8,07l grunEed Eo n1e January 24, 1899, I hzwe deseribe(il 2L fern] 0f appnmEus f0r eenbrelling Ehe sEmElng resisnnnee whieh I prefembly employ in eonneetion W1Eh Ehe presenE inven- Eion, and in cerEain partleulars Ehe present invention relanes E0 improvements 0f Ehis apparnEus deserihed in my earlier patenE.

I have i'llustmEed 1ny invenEion in Ehe ae- 00111 panying drawings, in whieh Figure l is a view of Ehe eonEroller for cou- Erolllng Ehe starEing resistanee 0f Ehe large rnoE0r. Fig. 2 is n seetiorml view Ehereof. Fig. 3 is a view 0f Ehe eontroller Eor e0nErolling Ehe s1nall xnoEor. Fig. 4- is a view showing Ehe bare for Ehe rheosEaE und Ehe (3011132L0l1- brushes. Fig. is a Eop view 0f Ehe enslng f0r Ehe soleneicls 0f Ehe eontroller. Big. 6 is e seeElonal viewof Ehe pisEon wiEhin Ehe e0re 0f Ehe eontroller. Fig. 7 is a view of Ehe Con- Erelling-switeh. Big'. 8 is diagrzun illus- ErnEing Ehe eireuit eonneeEions.

Like ehnrneters refer E0 like pars in Ehe sew eral figures.

In Fig. l I hzwe shown Ehe deviee f0r cou- Er0lling Ehe sEarEing resistanee. This 00mprises a suiEnble easing a, wiEhin whieh is plneed a solenoid a, :End wiEhin Ehe bere 0f Ehe solen0icl n eore a is adapted Eo 1nove. The eore is h0llow, and WiEhin Ehe eore is e pisE0n a helcl fixedly in posiElonbyixnem1s 0l' 2b shafE a, seeuredaE Ehe npper encl. 'lhe piston 0erries a duet a, Ehe passege Ehrough whieh may be ndjustecl l)y xneans 0f Ehe serew a. An opening a is also provided Ehrough Ehe pisEon, Ehrough whieh asses Ehe Sl1&llli 0f n holt; a Ehe hend 0f whieh is e(lm ated Eo seal Ehe porE when Ehe eore is movecl in 0ne direeEion and Eo be moved upward E0 unseal Ehe p0rE when Ehe e0re is moved in Ehe opposlte direeEion. A pzurE w, passing Ehrough Ehe end 01 Ehe b0lE, prevenEs Ehe wlEhdrzuval Ehereof. The hollow eore is fillecl WiEh oil, end Ehe eorezu1d Ehe piston Ehns eonsliEuEe n dnshpoE, whieh regulntes Ehe movexnentof Ehe eore. AE Ehe lower end 0f Ehe eore is previded a pnir 0f brnsheb l) Z), Ehe brush b belng adapEed E0 engnge Ehe faees 0f n series 0f Eenninnls b while Ehe brush b is adnpEed E0 engege Ehe fzzees 0f n serles 0f Eern1innls b A portion of Ehe eoils 0f Ehe rheosE-Ma :Ere eonneetecl beEween Ehe Eern1inale b b and 21 porEion beween Ehe Eer n1lnels U" b The lower Eerminnls b Zf nre dead Eennlnals und are noE in eonneeEien with 100 Ehe e0lls 0f Ehe rheosmlz. As Ehe bruehes b l) zxseend Ehe resisEanee 0L' Ehe rheoslm.is grzul- Ehrough solenoid Z, Ehereby penniEEing Ehe switeh-enn h Eo n1ove quiekly Eo Ehe 0ff positi0n, end Ehe ei1euiE t-hrough megnet d being e1so opened Ehe end of Ehe ermeEme Ehere- 0f is m0ved beekwerd onE 0f Ehe peth 0f Ehe eore a In order EheE Ehe megnet c mey be energized Eo releese Ehe eore a f01 Ehe emergeney stop, Ehe pleEe h eerried 011 Ehe enn h, is edepted Eo eng-ege eonteets h, Ehereby ciosing eircuit from mein 1 over coudueEor 11, megrneE c, end eonduetors 12 end 8 Eo mein 2. The denergizing 0f solenoid Z eonsequently fi1sE opens Ehe n1oEor-eireuit, efEer whieh Ehe e0re a is releesed, end Ehe eore a deseends E0 its iowermosE posiEion. The deseenE 01: Ehe e0re E0 iEs lowerrnosE posiEion depresses Ehe piun e;er e, Ehereby e0nnecting eonEecEs e e end conteets e 6 Eo Ehereby energize solenoid Z.

Heving deserihed my invention, wheE I eleixn es new, end desire Eo secure by Letters Petent, is-

1. The eombineEion wiEh e solenoid, 0f e h0110w e01re Eherefor, Ehe moveble elemenE of e rheostet eontrolled by Ehe movexnent 0f seid c0re, end e pisEon within seid e0re E0 form e deshpoE subsEenEieliy es described.

2. The combinetion with e seienoid, 0f e hollow core Eherefor, Ehe moveble eiemenE 0f e rheosEeE eonErolled by seid eore, e piston within seid eore, seid eore being provided wiEh e reek 01 series 0f EeeEh et 0ne side end e loekiny deviee edepted E0 engege seid EeeEh Eo meinEein Ehe c0re in eny edj usEed position, substentieily es dese1ibed.

3. The eombinetion wiEh e solenoid, end e swiEeh f0l' eonErolling Ehe eireuiE Ehere- Ehrough, 0f e hoilow 001e, Ehe movebie elemenE 0f e rheostet eonErolled by seid core, e pisEon WiEhin seid e0re, e reek 01' series 0f EeeEh cerried upon seid eore, e ioeking device nonnelly engeging seid EeeEh end edepted Eo permit Ehe eure Eo move E0 euE onE resisience whiie eheeking Ehe movemenE inEhe opposiEe direeEion, e releesing-xnegneE for reEreeting seid loeking deviee, end e switeh 'f01' eonErol 1ing Ehe cireuiE Ehrough seid releesing-magnet, snbstenEieily es deseribed.

l-. The eombineEion wiEh e solenoid end Ehe 001e Ehereofof Ehe moveble elemenE 0f e rheosteE conErolied by seid eore end edepted E0 open Ehe eireuiE when Ehe eore is in Ehe re- Erected position, en elecEroxnegnet end e perE eonErolled Ehereby edepEed E0 he inEerposed in Ehe peth 0f seid eore Eo prevent Ehe seine fron1 moving Eo Ehe reEreeted position Eo 0pen Ehe eireuiE nnEii Ehe pert eonEroiied by seid eieetromegnet is withdrewn froxn Ehe peEh 0f Ehe seid eore, subsEenEieliy es deserihed.

5. The eombineEien with e soleneid end Ehe eore Ehereof, of Ehe moveble elemenE 05 e rhe0- sEeE eontrolled by seid e0re end edepEed in Ehe retreeied posiEion 0f Ehe core Eo open Ehe eircuit, e mein swiEeh for opening Ehe eireuiE, en eieetromagnet ende perE controlled Ehereby edepted Eo be interposed in Ehe peth 0f seid eore E0 prevenE Ehe seme from moving Eo Ehe eireuiE-opening position unEii seid mein swiEeh hes been eeEueted, substentielly es deseribed.

6. The comhinetion wiEh esoienoid end Ehe core thereof of Ehe moveble eie1nenE 0f e P1100- sEeE eonEroiled by seid 001e end edepEed in Ehe retreeted posiEion 0f Ehe eore E0 0pen Ehe eireuiE, en eleeEro1negnetz end e perE e0n- Erolled Ehereby edepted E0 be interposed in Ehe peth of seid e0re Eo prevent Ehe seine from n1oving E0 Ehe circuiE opening position, e mein 01 conErolling swiEeh, en eieeEromegneE 0x soienoid f01 conEroiiing Ehe sen1e end e swiEeh f01 eonErolling Ehe eireuiE Eh10ugh seid eleeEromegneEs, snbsEenbielly es described.

7. The combinetion WiEh e solenoid end Ehe e01e Ehereof, 0f Ehe 1n0vebie eiement of e rheosEeE eontrolled by seid eore end edepEed in Ehe reEreeEed position 0'f Ehe e01e E0 open Ehe cireuiE, en eleetromegnei1 end e pexE COD- Eroiled Eherebyedepued E0 be interposed in Ehe peEh 0f seid (301e E0 prevent Ehe seine f1'0111 moving Eo Ehe eireuit -opening posiEion, e mein switeh, en eleeEronmgnet= 01' solenoid es soeieted Eherewinh end edepEed when energized E0 e1ose Ehe circuiE end e switeh f0l opening Ehe eireuiE Ehrough seid eleetromegneEs Eo de'nergize Ehe se1neend Ehereby IirsE open Ehe eireuiE eE Ehe swiEeh end subse" quenEly eE Ehe rhe0stet, substentielly es described.

8. The combineEion wiEh e solenoid end Ehe 001e Ehereof, of Ehe moveble eie1nenE 0f e1heosEet eonErolled hy seid eore end eonEeeEs edepted Eo be elosed EogeEher by WeighE 0f seid e0re when in Ehe retreeted posiEion end Eo be sepereted when Ehe eore is ettreeted by Ehe solenoid, snbstenEieily es deseribed.

9. The combinetion WiEh e soienoid end Ehe c0re Ehereof, 0f Ehe moveble eiement 0f e rheosEeE conrolied by seid eore e mein er 0011- trolling switeh, en eleetromegnet 01 soienoid for eontroiling Ehe seme, end eonteets 0011- Erolling Ehe eoniinuiEy 0f Ehe eireuiE throngh seid 1nein-switch eleetro1negnet edepEed Eo be elosed E0geEher when seid eore is in Ehe reErected posit-ion end E0 be sepereted when Ehe core is eEErected by Ehe solenoid, subsEen- Eially es deseribed.

10. The eombineEion WiEh e soienoid end Ehe core thereof, of Ehe moveble elemenE 0f e rheosEet eontmolied by seid eore, e swiEch f01. eonEroiling Ehe eircuiE Ehrough seid solenoid, e loeking deviee forholding seid e0re in eny edjusted position, e releesing-megnet fo1' reieesing seid locking device, e swiieh f01 coutrolling seid releesingxnegneE, e mein 01 e0n-' Ero1ling swiEeh, en eleelaron1egnei; f01 0011E101- ling Ehe seme end e swiEeh f01 eonEroiling seid eleeEromegnet, suhsEentieily es deseribed.

11. The eombinetion wiEh e solenoid end Ehe eore Ehereof, 0f Ehe moveble elemenE 0f e rheosEeE cont1olled by seid core, e swiEeh for eonrolling seid soienoid, e locking deviee f01 seid 001e, e releesingmegneE for eonEroiling- Ehe seine, e swiEeh f0i eonErolling seid reieesing-megneE, e mein 01 conErolling switeh,

IIO

an elee1'sromagnet for operaiing Ehe Sinne, a switch foreontsrollings-aid elecbromagnet, zmd means actuated by Ehe operation 01" said mein 01 eonErolling switch fox eontro1ling; seid releasing-magnet, substantially as descrihed 12. The combination With a solenoid and Ehe eore thereof, 0f Ehe movable e1ement 0'f a rheostan controlled by said c01e, a swiEeh f01' eontrolling said solenoid, a loeking deviee f01 said c0re, a releasing-magnet f01 controlling seid locking deviee, a switch E01 eonErolling said releasing-magnei, a mein 01' eonErolling swiEch, an eleetromagnet for eontrolling Ehe Same, an elecEromagneE f0r preventing Ehe movemen Of seid eore E0 Ehe circuiE-opening position, and a swiEch f01 eontrolling Ehe cireuit Ehrough seid latEer-menoioned eleetromagnet and Ehrough Ehe eleetromagnet which controls Ehe main switch, substantially es described.

13. The combination with an eleetrie n10t01' and Ehe sEarting resistance Eherefor, mechanism f01 cuEing in and ouE seid sbarEing resistance, 2E switch for eontrolhng said mechanism Eo ren1ove said starEing resist-anee f101n eircuiE, a seeond switch f01 eontro11ing said meehanism Eo insert Ehe starbing resistance in eircuit, a Ehird swiEch and meehanism coutrolled Ehereby f01' opening Ehe cireui Ehrough Ehe motor, substantially as described.

14. The combination with a moEor and Ehe starting resistance Eherefor, of meehanis'm f01 euEting the sc-arting resistance in1;o and 011E 0f eircuiE, a pnsh-hutton 01 swiEeh adapted when depressed Eo aetuaoe seid n1eehanism Eo 1 emove resistanee frorn eireni so 1ong es seid push-bur-Eon is depressed, a second push-buE- Eon adapt-ed when depressed Eo insert resistance in Ehe motor-eireuiE, a Ehi1d push-buEton and meehanism assoeiated Eherewith adapted when seid push-buston is depressed Eo open Ehe eireuit through Ehe 1110E01, substanEially as deseribed.

15. The eombinati'on With an electrie 1110E01, zmd Ehe startaing resisoanee Eherefor, 0fi meeh anisn1 for eutting seid resisEance inE0 anc1 0uE 0f circuii, a switch for contxolling seid mechanism Eo remove resistanee f10n1 Ehe circuit, a seeond swiEeh 'f'01 eontrolling seid mechanism Eo iusert resistanee in Ehe cireuit, :E thild switeh l11(1 n1eehnnis1n assoeiated Eherewith foropening Ehe moE0r-eireuiE, seid eeeond and Ehird switches being arranged so Ehat if Ehe seeond swiizeh be opemted and Ehen after an interval Ehe Ehir 1 swieh be 0pe1ated Ehe m0- E01 will c0n1e 110 resE gradually, whereas if Ehe Ehird swiEeh be alone operated Ehe 1110E01 Will be brought Eo resE suddenly for an emergeney sEop, substantinlly es deseribed.

16. The eombinatiou With a main 1110t01 and a stzu*ting resistanee Eherefor, 0f an auxiliary xnutor and Ehe st arting resistanee Eherefor, meehanism f01 eutting Ehe sEm-Eing resistanee 0f Ehe auxili-ary motor int0 and ouE of eireuit, a switeh f01 eonErolling seid meehanismmeehanism f01 eut'ting Ehe starting resisEance 0f Ehe mein 1110E01 inEo nnd out 0'f eireuit, a seeond switeh f01 conErolling said meehanism t0 remove resistance from eireuit, a thi1d switeh f01 eontrolling seid meehanism E0 insert resist-ance in circui, and a fonrEh swiEeh and mechanisrn associaued Eherewith 'f01' opening Ehe eireuit- Ehr0ugh the mein n10t01, subsEantial1y as deseribed.

17. The eombination with a solenoid and Ehe e0re Ehereof, 0f a switch adapted E0 he ac- Euated when Ehe c0re is in Ehe 1eExacted posi- Ei0n, an eleetmomagneu and a pa1E eontrelled thereby adapted Eo be interposed in Ehe paEh of seid c0re 110 prevent Ehe same f101n moving to Ehe retraeted position 110 acbuaEe said switeh unti1 Ehe pzu*t eonErolled by seid e1eetromagneE is withdrzuvn fron1 Ehe paEh 0f Ehe seid core, substantially es deseribed.

In witness whereof 1 have hereunto subseribec1 n1y name in Ehe presence of Ewo Witnesses.

CHARLES A. DRESSER.

\Vitnessesz W. CLYDE JONES, M, R. ROOIIFORD. 

